Sketching interfaces for PC's often make use of the mouse. This device, however, is not suitable for the creation of "good" gestures. This paper describes the use of a PHANToM device, a force feedback device, for making sketches on a computer. This device has a pen-like appearance and is therefore natural to use. The paper elaborates on algorithms for the use of the force feedback capabilities of the PHANToM device in a sketch interface. The algorithms for creating and modifying sketches will be discussed, together with the algorithms for feeding force back to the user.